Samchika – A Java Library for Fast, Multithreaded File Processing

In plain words

Samchika is a Java library for processing large files with multiple threads simultaneously. It handles concurrent file reading and writing using a producer-consumer model with built-in backpressure to prevent memory overflow. The library provides a simple builder API for configuring thread pools, includes live metrics tracking for performance monitoring, and supports buffered asynchronous writing. It is designed for developers working with large CSV files, logs, or data transformation pipelines who need production-ready file processing without extensive boilerplate code.

written from the facts on this page · September 2026

From the sources

A fast and light-weight multithreaded file processing library for Java. - GitHub - MayankPratap/Samchika: A fast and light-weight multithreaded file processing library for Java.

Samchika (meaning File in Sanskrit) is a re-usable , easy-to-use , and extremely fast file processing library for the Java language. It is built with a strong focus on multithreading to handle CPU-intensive file processing tasks in parallel, enabling high performance even with massive files. See the examples directory for detailed implementations of these use cases. SmartFileProcessor.builder() .inputPath("large_dataset.csv") .outputPath("transformed_dataset.csv") .batchSize(10000) .lineProcessor(line -> line.toUpperCase()) .displayStats(true) .build() .execute(); 📦 Installation Maven <repositories> <repository> <id>jitpack.io</id> <url>https://jitpack.io</url> </repository>…from github.com

In the maker’s words, at launch

Hi HN, I built a Java library called SmartFileProcessor to make high-performance, multi-threaded file processing simpler and more maintainable. Most Java file processing solutions either involve a lot of boilerplate or don’t handle concurrency, backpressure, or metrics well out of the box. I needed something fast…

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